Overland Rack Angle Compatibility Guide

 

Overland Rack Angle Compatibility

One Angle.
Every Build.

XTR bed racks use three rack angles — 9°, 13°, and 20° — each matched to specific vehicle setups and accessory families. Find the right angle for your build so every rail, crossbar, and mounting kit lines up perfectly.

Engineered quality

CNC billet strength

We didn't just join the strong extrusions with some sheet metal corner brackets — we put the aluminum where it makes a difference. Every angle variant uses the same 6061-T6 Aerospace grade billet, machined to precision to join all components with exact angular alignment.

  • ✓ All three angles share the same billet standard
  • ✓ 9°, 13°, and 20° brackets machined to exact specs
  • ✓ No sheet metal corners — pure aerospace aluminum
CNC billet corner brackets for XTR bed racks — available in 9°, 13°, and 20° angles
Quick Reference

Angle Compatibility

Rack Angle Product Line Compatible Accessories
9° Gladiator Series All Gladiator bedracks, Gladiator mounting kits, Gladiator-specific crossbars, including Softopper versions on Gladiator.
13° Soft Topper Series Soft Topper bed racks for all truck models (except Gladiator). 
20° Universal / Crossbars All XTR1, XTR3, XBRS Bed Racks, universal mounting rails, standard rack accessories (except Gladiator or Softopper)
9-degree Gladiator rail crossbar — XTR Gladiator series rack angle
9° angle

Gladiator Series

The 9° angle is dedicated to the Gladiator product line. This angle was engineered specifically for Gladiator rails and their mounting geometry, ensuring a flush, secure connection between your rails and any Xtrusion add-on accessories. This includes Softopper Gladiator Builds

Xo Skeleton Note: The XO.SKLTN Uses a complete different system not to be confused with Gladiator XTR 9 Degree components.

13-degree Soft Topper rail crossbar — XTR Soft Topper series rack angle
13° angle

Soft Topper Series

The 13° angle serves Soft Topper products. This intermediate angle provides the right compromise between load clearance and low profile when mounting accessories to Soft Topper rails and their compatible hardware.

Crossbars: XTR1 and XTR3 use 13° when mounted on Soft Topper setups.

20-degree universal rack crossbar — XTR universal and crossbar series
20° angle

Universal / Crossbars

The 20° angle is the default for all other Xtrusion products — universal mounting rails, standard crossbars, and general overland rack accessories. This is the most common angle in the industry and works with the widest range of roof rack and truck bed rack systems.

Exception: XBRS Crossbars use 9 Degree components, in case you decide to upgrade to full rack, so it remains compatible on joints.

Quick Reference

Xo Skeleton — Angle Breakdown

The Xo Skeleton uses two angles Gladiator Specific or Universal. However, some accessories might be compatible with both, because the top rail consolidates both angles into one. Crossbar mounts or awning mounts are compatible with both versions.

9° Angle

XOSKLTN Gladiator
Xo Skeleton Gladiator 9-degree angle
  • Gladiator rail mounts
  • Gladiator-specific hardware
  • Gladiator crossbar slots

13° Angle

XOSKLTN
Xo Skeleton Soft Topper 13-degree angle
  • Soft Topper rail mounts
  • Soft Topper mounting kits
  • Soft Topper crossbar slots

Note: The Xo Skeleton never uses the 20° angle.

How To Choose

The Right Rack Angle,
Explained

Every XTR accessory — crossbars, mounting brackets, add-on hardware — is cut for one specific angle. The right angle depends on your primary rail system or vehicle setup. Choosing the matching angle ensures every component in your build aligns correctly and carries load as designed.

  • Identify your rail system. Gladiator = 9°, Soft Topper = 13°, universal = 20°.
  • Check your crossbar type. XTR1/XTR3 come in all three — order the one matching your rails.
  • Stick to one angle per build. Mixing angles creates misalignment and stress points.
What determines the rack angle I need? +
Your rack angle is determined by your primary rail system or vehicle setup. Gladiator rails use 9°, Soft Topper setups use 13°, and universal or standard rack accessories use 20°. Choosing the matching angle ensures every accessory — crossbars, mounting brackets, and add-ons — aligns correctly.
Can I use a 20° crossbar with a Gladiator rail? +
No. Gladiator rails are engineered for 9° accessories. Using a 20° crossbar on a Gladiator rail will result in misalignment and improper load transfer. Always match your crossbar angle to your rail system.
Do Soft Toppers and Gladiator rails use the same angle? +
No. Soft Toppers use a 13° angle while Gladiator rails use a 9° angle. These angles are not interchangeable. If you're building with both types, you'll need separate angle-specific accessory sets.
Are XTR1 and XTR3 crossbars angle-specific? +
XTR1 and XTR3 crossbars come in three angle variants — 9°, 13°, and 20° — to match each rack system. The 20° variant is the default and works with universal racks. The 13° variant is used when paired with Soft Topper setups. Order the angle that matches your primary rail system.
Why do overland racks use different angles? +
Different rack angles exist to accommodate varying vehicle roof geometries, rail profiles, and load requirements. The 9° angle works well with Gladiator-style tubular rails. The 13° angle provides a middle ground for Soft Topper mounting systems. The 20° angle is the industry standard for universal applications and offers maximum load clearance.